Tire-making machine.



L. n, onosgY. TIRE MAKING MACHINE,

APPLIOATION FILED FEB. 11, 1911.

3 SHEETS-SHEET 1.

WITNESSES: "ENTOII;

1 a i i ATTORNEY.

Patented 0st. 29, 1912.

L. D. CROSBY.

TIRE MAKING MACHINE. APPLICATION TILED FEB. 11, 1911.

Patented 001129, 1912.

3 SHEETSSHEET 2.

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LESTER D. CROSBY, F HARTFORD, CONNECTICUT.

TIRE-MAKING MACHINE.

Specification of Letters Patent.

Patented Set. 29, 1912..

llfisififiifi.

Application filed February 11, 1911. Serial No. 607,972.

To (1 .7] aclzoia it may concern 30 it known that I, LESTER D. CROSBY, a

citizen of the United States, and a resident of Hartford, in the county of Hartford, State of Connecticut. have invented certain new and useful Improvements in T ire-Malt ing Machines, of which the following is a specification.

The object of this invention is to produce a machine of the character described having features of novelty and advantage and more particularly to produce such-a machine having means for rotating the core at varying speeds and in opposite directions, together with means for turning the core into a number of different positions to facilitate the various operations incident to, the mamrfacture of a tire, also to provide a tool carrying arm and a stock supply rack, both of which are adapted to be moved into operative position with respect to the core one at a time.

The invention also comprises other features of construction which will be more particulaiuy described in the accompanying specification and claims.

in the drawings Figure l is a side elevaticn of a machine embcdying my invention. Fig. 2 is a detail plan view of the change speed gear for driving the machine. Fig. 3 is a sectional vertical section of part of the nuu-hine seen from the side. Fig. 4 is a rca end view of the machine. Fig. 5 is a detail view of one of the machine rolls. Fig. (3 a plan view of the machine with the roll carrying head removed.

Referring to the drawings n denotes the base part of the main frame of the machine, 7; the rcll carrying head secured on said main base part. is the core. (Z in general the pivoted carrying arm, c in general the reciprocating stocl; rack. I

The core c on which the layers of various materials going to make up the tire are laid in proper succession and pressed, rolled and fitted to the shape of the finished tire and then cured. is fastened to a stub shaft 1- niountcd in a bearing 2 in a bracket 3 ex-- tending from the main base part a, and carries a gear r which meshes with anoths: gear 5 carried by a shaft 6 having bearings T? in said bracket 3. At the opposite ends of the shaft 6 is a spur gear 8 meshing with a spur gear 9 on a tubular shaft 10 supported in the main base of the machine, and to the opposite ends of this tubular shaft 10 is a spur gear 11 meshing'with a pinion 12 fast to the shaft 13 to the other end of which is secured the beveled pinion 14 meshing with the gear 15 and a shaft 16 which can ries the change gear mechanism which is indicated in general at 17. The bracket 3 is carried by a shaft 20 passing through the tubular shaft 10 and having at its rear end a gear 21 meshing with a spiral gear 22 on the shaft 23, to the outer end of which is secured a train of spur gearing down to the hand wheel 24 and it will be seen that by the rotation of this hand gearthe bracket can be turned so as to move the core 0 either to a horizontal, vertical or any intermediate position. The shaft .20 also carries a notched stock Wheel 25 and a-lever 26 is provided notched to engage'projections on the stock wheel and normally held in engaging pcsition in order to hold the core in any desired position of adjustment. han dle 27 is provided. by means of which the lever 26 can be disengaged from the locking wheel 25 to permit rotation of the shaft 20 by the hand wheel 24. The change gear 17 preferably will provide for driving the core at two speeds in one direction and at one speed in the reverse direction; the last speed which is the same for either direction of rotation is intended to be at a rate of about 20 R. P. M. and the second speed which applies only to one direction of rotation is 220 P. M. It will thus be seen that provision is made for mechanically driving the core in opposite directions and at various speeds. which constitutes a very desirable. feature in a tire making machine.

The head 7) carries a roll of material known in the trade as friction cloth lay- .ers of which are stretched and laid on to the core as the first step in the process of building up a tire. This friction cloth is carried on a strip of ordinary cloth or canvas in order to separate the layers as they are rolled up on the roll. and prevent them adhering. One of these friction rolls is indicated at 30 and 31 denotes a roll on which the prote ting cloth is wound up as the friction cloth is unwound, the weight of the roll 31 restii'ig against the periphery of the roll 30 being sufficient to drive it. Fig. 3 shows a strip of the friction cloth being wound on to the core and shows it passing over the stretching and guiding rolls 32 and 33 and the brake roll il-l tothe' shaft of which is secured the brake drum 35 sure. i

rounded by the brake band 36, the threaded .stud 37 supported in a pivoted bracket 38 being provided for the purpose of engag ing the brake lever 39 to vary-the braking action on the brake roll 34:. As the friction is wound on to the core it is stretched lengthwiseand the brake roll 34 is provided for the purpose of retarding the normal feed of the friction thus accomplishing the desired stretching. It is absolutely essential that this friction be laid on to the core evenly, the center of the friction strip lying on the center line of the periphery of the core. Many times the friction is not wound truly on the roll 30 and as a result it will be apparent that the fric,-

tion will not wind truly on to the core un} less some means are provided to obviate the difiiculty. I have provided such means by pivoting the head 7) on the base a so that il can swing slightly and in order to facilitatethe swinging I have interposed ball bearf ings indicated at 40, It willthus be seen that as the core draws the friction of? the roll 30 the head is free and swingin and; thus allows the proper winding of the fric tion on the core. In order to prevent any side slipping of the friction l have circumferentially grooved the guide rolls 33 as seen in Fig. 5.

As each layer of friction is placed on the core various rolling, compressing and stitching tools carried by, the arm d are *brought' into play to form the material closely about the core, and this tool carrying armwhich is pivoted to the base as indicated at 44: is'swung ar'oundinto the position shown at Fig. 3 in order to properly present thevarious tools to the core. While the friction is being wound on to the core the core is rotated in the direction of the arrow in Fig.3 at a slower rate of speed. After a strip of friction is in place the operator by means of the shifting lever 18 throws in the higher speed which is utilized.

while the various tools are being used to shape the material to the core. This tool carrying arm is provided with a pivoted stop pin 45 which engages a suitable recess in the base to hold it in place. After the layers of friction are applied to the core the stop pin 45 is released'through the foot lever 4d seen in Fig. 1 and the arm is swung around to the position shown in Figs. 1 and 3. The reciprocating-stock racke is now moved over into operative position. the direction of rotation of the core is reversed to that indicated by the arrow of Fig. 1 and the layers of the different materials are fed. from the table 50 up the incline guide 51 on to thecore. ca-ied'on the core the rack is moved out of (be way and the tool carrying arm is swung around and locked into position, the-direc'- tion of rotation of the core is reversed and After each layer of stock is 10- the various finishing tables brought into play. After these operations are finished the arm is again swung around, the rack movedup into operative osition, another layer of material put'in p ace on the core,

around again into operative position and the operation is thus continued until the complete tire is built up.

jBeads, Wire, etc, are laid into the rim edges of the tire and While these operations are being carried out both the tool arm and a horizontal position while the. beads, wire .etc. are being laid in place on one side and the retaining stops are being secured. .Then the position of the core is reversed and the same operation takes place on the other side.

In building up tires of different sizes of course it is necessary to have cores of the corresponding size and it is understood that these cores are removably secured to the stub shaft 1. other it is of course necessary to change the of the rack guide 51.

back and forth by means of the rack and vided tohold the arm in any desired osition of'adjustment and by reference'to igs. 1 and 6 it will be seen that I have provided ferent sizes, the tool arm'carryinga pointer 64. By moving the tool arm by the rack and pinion until the pointer 64:. indicates on tioning of the various tools carried by the tool arm withrespect' to the core. The rack guide 51 is adjustable back and forth on the table of the rack in order'that itmay be brought into proper and operative rela-, tion to the core.

manufacture of tires owing to the fact that the core is power driven andat varyin speeds and also for the reason that the too arm and the stock rack can be moved away from the core and the core turned to vaoperator to easily reach all parts of the core to perform the various operations of locating and fastening the various materials and performing the finishing-and trimming operations. These features taken in connection with the provisions made for securing even application of the friction to the core result in making it possible to materially increase the production of the machine and reduce the cost of manufacture.

I claim as my invention 1. In a machine of the character described, the combination with a base and a.

In changing from one size tire to anposition of the tool carrying arm and alsothe scale 63 the size of tire which is to be made, an accurate adjustment of the tool. arm can be secured insuring the proper posithe rack moved and the tool arm swung the rack are removed, the core is turned to pinion 60 and 61 and set screw 62 being proa scale 63- graduated to indicate tires of dif- This machine will greatly facilitate the rious positions, making it possible for the.

90 i As will be seen in Fig. 3, the tool carrying arm is adjustable roll carrying head, of a core. supported from a, said base, a variable speed gearing, a driving connection between said gearing and said core whereby the latter may be rotated (in its own axis at varying speeds and in opposite directions, means for moving said core bodily about a horizontal axis and means for holding said core in any desired position of adjustment.

2. In a machine of the character described, the combination with a frame of a core supported on said frame and adapted for bodily movement about a horizontal axis in order to adjust it in different positions, means for holding said core in any desired position of adjustment and change speed gearing and driving connection between said gearing and said core whereby said core may be rotated on its own axis in any desired position of adjustment.

3. In a machine of the character described, a machine frame, a shaft rotatably mounted therein, a bracket carried by said shaft, a core carried by said bracket and rotatably mounted on its own axis, means carried by said bracket for rotating said core and change speed gearing, driving connection between said change speed gearing and said means, and means for rotating said shaft and the parts carried thereby.

4. In a machine of the character described, a main frame and core carried thereby, mechanical means for driving said core at varying speeds and in opposite directions, means for moving said core bodily about .a horizontal axis and a pivotally mounted tool carrying arm adapted for movement into and out of operative relation with respect to said core.

5. In a'machine of the character described, a main frame and core carried thereby, mechanical speeds for driving said core at varying speeds and in opposite directions, means for moving said core bodily about a horizontal axis, a pivotally mounted tool carrying arm adapted for movement into and out of operative relation with respect to said core, and a reciprocating stock rack adapted for movement into and out of operative position with respectto said core.

6. In a machine of the character described, a base, 'a non-rotatable roll carrying head mounted thereon andadapted for slight movement about a vertical axis, a rotatable core and a tool carryin arm mounted in operative position to said core.

7. In a machine of the character described, a main frame, a tubular shaft 311 ported in the frame, a solid shaft exten ing through said tubular shaft and having its bearing therein, a bracket carried by the solid shaft, a stub shaft having a bearing in said bracket, a core mounted on said stab shaft, an intermediate shaft supported in hearings in said bracket and having a gearing at its forward end meshing with the gearing on the stub shaft, and a gear at its rear end meshing with the gear on the innerend of said tubular shaft, a gear on the outer end of said tubular shaft, a changespeed m gearing, a connection between said last men? tioned gear and said gearing, a gear on the outer end of the solid shaft meshing with a spiral gear on a shaft extending transversely of the frame, means for rotating said last mentioned shaft, a notched stop wheel car riedby said shaft,- a notched lever cotiper; ating with said stop wheel, andxmeans for operating said lever. I

S. In a machine of the character described,

the combination with \thb machine frame, of a bracket arm having one end supported-on the frame, its other end projectingont away from the frame,'said bracket arm being rotatable, a core; mounted at the outer end of said bracket arm and rotatable on its own axis, means for rotating said bracket arm, and means for rotating said core on its own axis.

' 9. In a machine of the 'character described, the combination with a frame, and a stock roll supported thereby, of a rotatable coresupporting member, a core mounted on said member in operative relation to said fabriccarrying roll and rotatablenpon its own axis, means for rotating said member, and

means for rotating said core on its own axis frame, of a shaft mounted therein, arota-'- table core supporting member connected with said shaft and by means of, which it is rotated, a core mounted on said member and;

rotatable 'on its own axis, 'a second shaft mounted in said machine frame, driving connections between it and said core, means for driving the first mentioned shaft, and means for driving the second shaft in either direction and at varying s eeds.

12. In a machine of t e character described, the combination with a frame, of a tubular shaft mounted therein, a second shaft passing through said tubular shaft, 2,

core-supporting member carried by said sec-- ond shaft and rotatable therewith, a core mounted-on said member and rotatable on its own axis, driving connections between said tubular shaft and said core, means for rotating said tubularshaft in opposite directions, and means for driving the said'secand shaft.

13. In a machine of the character described, the combination with a frame, of a tubular shaft mounted therein, a second shaft passing through said tubular shaft, a core-supporting member carried by said second shaft and rotatable therewith, a core mounted on said member and rotatable on its own axis, driving connections between said tubular shaft and said core, means for rotating the tubular shaft in opposite directions and at varying speeds, and means for rotating theother sha t.

14.111 a machine of the character described, the combination with a frame, of a tubular shaft mounted therein, a second shaft passing through said tubular'shaft, a core-supporting member earried by the second shaft and rotatable therewith, means for rotating said shaft, a core on said mem ber, driving connections between said tubular shaft and said core, and means for rotating said tubular shaft at varying speeds.

1 In 'a machine of the character described, the combination with a frame, of a' stock roll supported thereby, a core and a reciprocating stock rack adapted to be moved into and out of operative relation with respect to the core, means for turning said core bodily about a horizontal axis, and means for rotating said core upon its own axis in opposite directions and at varying speeds. v

16. In a machine of the character described, the e'ombimltion withthe machine frame and a stock roll supported't-here'by, of a. rotatable core-supporting bracket and a core mounted thereon, a pivoted tool-car rying arm adapted for movement into and. out of operative relation with respect to the core, a reciprocating stock rack adapted for .movement into and out of operative relation with respect to the core, and arranged oaaeae at. the opposite side of said core from said stock'roll, power driven means for rotating said core on its own axis at slow speed in opposite directions for cooperation either with said stock roll or said stock rack, and power driven means for rotating said core on its own axis at a faster speed for cooperation with said tool-carrying arm.

17.111 a machine of the character described, the coml'iiuation with a base and a roll-carrying head, of a core, reverse speed gearing. driving connections between said gearing and said core whereby the latter may be rotated on its own axis in opposite directions, and means for moving said core bodily about a horizontal axis.

18. In a tire building machine the combination with the machine frame of a rotatable core supporting bracket, means for rotating said bracket, a core mounted on said bracket and rotatable upon its own axis, and means for rotating said core in opposite directions. I

19. In a tire building machine the combination with the machine frame of a rotatable core sup 'ioiting bracket, means for rotating said bracket, a core mounted on said bracket and rotatable upon its own axis, and means for rotating said core at varying speeds. i

20,. In a. tire building machine, the com- ,lnnation with the machine frame, of a rotatablecore-support, means for rotating the support,a core carried by said support and rotatable upon its own axis, and means for rotating said core at varying speeds and in opposite directions.

' f LESTER D. CROSBY.

litncsses E. L. S'roUoHroN, D. K. CUaTIss. 

